Wireless tracking device for lost items: which communication technology to use?

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amaresh92
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hi,
its is all about tracking lost things.
we have decided that we will make a device which can be put into things like purse ,keys e.t.c and we will be able to trace it if it gets lost.

but i don't have any idea how to approach for it and could you please suggest me technology which can be use to communicate between devices.

thanks
 

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For how much distance your requirement is?

For near by distances you can RF transmitter/ Receiver will be enough, but if you are trying to make it remote, then a GPS system is needed but of course the cost will increase exponentially.
 
hisham.i said:
For how much distance your requirement is?

For near by distances you can RF transmitter/ Receiver will be enough, but if you are trying to make it remote, then a GPS system is needed but of course the cost will increase exponentially.

could you please get me some information ,from where i can learn how to work with GPS and transmitter/receiver?

thanks